Errors: 1) Invalid bill to customer reference (ORIG_SYSTEM_BILL_CUSTOMER_REF) ((Null))
2) The Bill To address reference must exist in Oracle Receivables, and it must be assigned to the Bill To customer
(ORIG_SYSTEM_BILL_ADDRESS_REF) ((Null)

for this issue i got support note : 1097846.1,219868.1 even now the issue still there.